
The Pokemon Trading Card Game: Gym Challenge set was released in August 2000 and is the sixth set of the Neo Series. The set features the main characters from the Pokémon anime series and introduces Steel-type Pokémon as well as new Trainer cards. In total, there are 132 cards in the set, including 10 holographic cards and 7 Type energy cards. The set revolves around eight Gym Leaders from the Pokémon anime series and provides support for the colorless type Pokémon.
The Gym Leaders are Brock, Misty, Surge, Erika, Sabrina, Blaine, Koga, and Giovanni. The artworks featured on the Gym Leader cards depict them in their iconic poses and the Trainers feature their matching logos. Two of the Trainers are limited cards, meaning they are only printed in two copies. Many of the cards also reference the Pokemon anime, featuring Pokemon in poses that were seen in the show.